Post your logs! Here's a tutorial on how to do it made by our friendly neighborhood Skipper!

2.1 - There are many reasons this can happen. Most common reason is because Singleplayer Mods.This is the first thing you get asked in your Ban Appeal. We will ask you what Mods you got installed. If you don't have any installed you can even write that directly into the Appeal. If you got some installed, we need a list of all. For that you go to your Storage into the Mods folder and list us all the Mod names.We will proof if any of those are Singleplayer Mods. If yes, you need to remove them. After that we can unban you.

2.2 - If you have no Mods installed, then we need your Log. For that you need to go to your Starbound folder:

Open the "starbound" file with any text editor you wish. I prefer using "Notepad ++", it's free and common use for things like this. After opening it you copy everything and paste it into this Website: "hastebin.com"After pasting all in, you click save and send us the Link to it. We will tell you then what wrong is.

As soon as you pasted everything from your Notepad to hastebin, press a little "save" icon on the top right.
Then you'll see the link (AKA URL) in the URL field in your browser: like
hastebin.com/ydgayt
Give that link to us